no-test-callback.test.js

import { RuleTester } from 'eslint';
import rule from '../no-test-callback';

const ruleTester = new RuleTester({
  parserOptions: {
    ecmaVersion: 8,
  },
});

ruleTester.run('no-test-callback', rule, {
  valid: [
    'test("something", () => {})',
    'test("something", async () => {})',
    'test("something", function() {})',
    'test("something", async function () {})',
    'test("something", someArg)',
  ],
  invalid: [
    {
      code: 'test("something", done => {done();})',
      errors: [{ messageId: 'illegalTestCallback', line: 1, column: 19 }],
      output:
        'test("something", () => {return new Promise(done => {done();})})',
    },
    {
      code: 'test("something", (done) => {done();})',
      errors: [{ messageId: 'illegalTestCallback', line: 1, column: 20 }],
      output:
        'test("something", () => {return new Promise((done) => {done();})})',
    },
    {
      code: 'test("something", done => done())',
      errors: [{ messageId: 'illegalTestCallback', line: 1, column: 19 }],
      output: 'test("something", () => new Promise(done => done()))',
    },
    {
      code: 'test("something", (done) => done())',
      errors: [{ messageId: 'illegalTestCallback', line: 1, column: 20 }],
      output: 'test("something", () => new Promise((done) => done()))',
    },
    {
      code: 'test("something", function(done) {done();})',
      errors: [{ messageId: 'illegalTestCallback', line: 1, column: 28 }],
      output:
        'test("something", function() {return new Promise((done) => {done();})})',
    },
    {
      code: 'test("something", function (done) {done();})',
      errors: [{ messageId: 'illegalTestCallback', line: 1, column: 29 }],
      output:
        'test("something", function () {return new Promise((done) => {done();})})',
    },
    {
      code: 'test("something", async done => {done();})',
      errors: [{ messageId: 'illegalTestCallback', line: 1, column: 25 }],
      output:
        'test("something", async () => {await new Promise(done => {done();})})',
    },
    {
      code: 'test("something", async done => done())',
      errors: [{ messageId: 'illegalTestCallback', line: 1, column: 25 }],
      output: 'test("something", async () => new Promise(done => done()))',
    },
    {
      code: 'test("something", async function (done) {done();})',
      errors: [{ messageId: 'illegalTestCallback', line: 1, column: 35 }],
      output:
        'test("something", async function () {await new Promise((done) => {done();})})',
    },
  ],
});